<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>bs4</title>
</head>
<body>
    <h2>
        <div>
            <strong>北京</strong>
            <strong>上海</strong>
            <strong>广州</strong>
            <strong>深圳</strong>
            <strong>苏州</strong>
        </div>
    </h2>
</body>
</html>